Single staying machine cutter



Jan. 1, 1935.

Bil

E. Ev HEARING SINGLE STAYING MACHINE CUTTER Filed 001. 17, 1952 IN V EN TOR,

Elm erEHea rz'r g,

A TTORNE Y.

I The, obj cc of he invention is ito provide v im-;

e prpyements in interchangeable ,eande reversible cutters broadly, but more particularly: with re,,

lation zto izthea cutters use'du "h single; staying machinesnq 43:, 1'1 V, t, These cutters aretwoiin numberhfor each machine, nthatj thenforward' for reciprocating cuttenj'and thelrearaori stationary cutterysand in each lease theyshave-heretofore comprised re1a-' as, much as: four. inchesiin 1ength,' andrequires frequentireplacement. i i A v Another :objectitherefore. is to provide elements of-Jthisi "character, comprising supporting fmembers, reversible cutting heads, and means to de-' tachably asecure said; heads 1 ,tofisaid members, :fso

by? new heads at-s'imilarlysinall cost;

" exposed at va giventime, to frictional contact contact does not result in wearing down the cutting ,Eedgetfifiiaril' inoperative surface, but which inoperative surface or surfaces can bebrought into operative position by merely detaching the head from the supporting member, either revere-'- ing or inverting said head-and then securing it again in operative position upon said member.

With these and other objects in mind, the invention comprises further details of construction and operation, which are fully brought out in the following description, when read in conjunction with the accompanying drawing, in which Fig. 1 is a side elevation of both the stationary and a portion of the movable cutter elements; Fig. 2 is an elevational view of the operating surfaces of the stationary cutter head and its supporting member; Fig. 3 isa similarview of the movable cutter head and its supporting member; Fig. 4 is a section on the line 4-4 of Fig.

tivelyaheavy members; theiadjacent surfaces of whichjf-a-loneg are active; l

111-, timervvorn' and grounds away; by-reason of the. normaluse oftthehmachine: andthe resharp-' eningrofathe:rcutting edges, respectively, the en- $1 tireucuttern-ineach instancerbecomes of novalue afteryrbut relativelyuslight decrease inai-t's size This has-lmade the cutters expensive, especially theugiorward f movable cutter, which is i, usually As ,theseusurfaces are that as; the former. wear or? are ground thin be yond .a definite feasible :rlimit; theyi ma'y be discarded with relativelylismall flossend replace further ,objectr'is'tol provide 'a modified form ofvboth ireversible i and invertible. cutter -head,1 each side: Qf, I which iisiaprovided with s a-plurality of angularlyi disposed"surfaceswin which the! cutting edges. lie, :but only one ofwhich surfaces.

with thecorrespondingksurface ofitheropposite or cooperating cutter head, so thatsuchfifrictional 2;. Fig; 1st sarong:Maserati 64: F1 Fig. 6- isu.anaelevationaliyiew of the' operative faces of a cutter head and its supporting member, showing a'modified form of theinvention; Fig 7: is a section on-thef 1ine 7-7 of ,Fig. 6;

and Figs. 8..and;9 are elevationalviewsofthe stationary andmovable cutters andttheir' sup-. porting members,respectively, of slightly difier -ient shapes than those of Figs. 1 to. 5, Referring first to Figs; 1 to 5,,a stationary cuttingrelement comprises a supporting member- 1, which is normally secured by a'bolt. passing. thru an aperture 2: to a single staying machine, or other device forwhich this typeof cutter. is adapted, said 'memberzbeing provided witha re cess 3, within which'ispositioned. a fixed lug or pin, 4,. adaptedto enter one of the apertures 5 of a cutting head 6, which head is of substantially thelsame shape i315 said recess,'and is normally secured therein by means of one or more. screws or: bolts '7." Said head and supporting member are "further characterized by aligned apertures 8, while one :portion of each: of .wthef opposite surfaces of the peripheryLOfthe aper-s ture in said head is defined by :cutting edges 9 ,andlO of any desired shape and arrangement, and it is to be noted that by merely removing and'reversing the cutterhead either of said pairs of cutting edges is brought into operative position with respect to the movable cutter element. Both head'and'adjacentmember are cut away at -11 upontheir lower portions in order to pass the angular corner portion of a box (not shown) when the machine is in the operation of securing 3' a stay'or binding strip thereto.

The :movable? cutterelement in turn comprises a supportingxmember 12, the rear endlface'of which istprovided ?with a recess 13, in which 'is' secured by means ofa screw 14 or the like a cutter head 15, having a plurality of apertures 16 into which normally extend one or more lugs or pins 17, the under portions of both said head and supporting member being cut away at, 18,

while the edges 19 and 200i" the cutaway region in said head are of any desired shape and arrangement, in order to properly cooperate with the cutting edges 9 and 10 of the stationary cutter head, when severing that portion of a stay or binding strip attached to a box or other article from the'remaining portion of the same.

Thus, this'movable cutter head can likewise be removed from its supporting member, reversed and again attached thereto, exactly the same as the stationary cutting head, thereby offering two sets of cutting edges upon each head, with e without-destroying the supporting member.

Referring now to Figs. 6 and 7, there is here illustrated amodifiedaform of cutting head and supporting member, and whileonly a stationary element is shown, it is to be understood that the principle involved is equally applicable t o a movable or reciprocating element, In' this case, therefore, the supporting nembergl is. provided with a transversely extending; recess; 22, the in.-

being parallel with the exposed or operating surface 24 of said member 21, while the lower portion 25 of said recess is at least slightly angularly positioned, so that said recess decreases slightly in depth downwardly; A cutter head 26 isrnormally secured withinsaid recess by means of ione or more screws or bolts;27, and said head in this instance is aL-para'llelogram in cross section,ij'comprising in' the. main a shearing-surface 28,"; 1ying1in ';the...plane of the operating surface 24,.of the supporting membenya'diagonally positioned inoperative shearing surface 29, positioned against theinner surface 23 of said recess 22, a'secondinoperative shearing surface 30, positioned'against the inner surface 25 of said recess',.and a. third inoperative surface 31, parallel with: and diagonally positionedwith respect to the adjacent surfaces 25 :and' 30..and directly opposite the" surfaces23 and :29, said last-named shearing'su'rface 31 .thereby being depressed beneaththe outer operating-surface 24 of said member;

---As seen in.Fig.-'6,the central portions of said head. and supporting member are provided with aligned apertures 32, the normal upper and lower portions of the peripheryof the aperture in said head being so formed asto provide angularly disposedcuttingedges 33 and 34, which in. a

single "stayingmachine' or the like-function the same as the corresponding cutting edges 9 and 10 in thatiforml of the devicefirst described(Fig. 2)).1'1'HOWSV81', in this instance two forward and two rearward sets of cutting edges are provided,

thus making four in all, so that when' the forward lower set become dulled-the head may be.

detached and either inverted or reversed, so as to bring into-operative position a sharpened set of-:;such e'dges' In this manner all of. the four 1 sets of cutting edges maybe used in turn, before it isv necessary to re-sharpen or regrind any of them. Also, in any of such four operativepositions.=said head is maintained firmly positioned by means of the upper and lower walls of the 39 and 40 are secured exactly as in the form of M the device first described, and illustrated in Figs.

2 and 3, the only diiference being that the supporting member 3'7, is of somewhat different shape fromthat-of-the corresponding member 1, ner surface 23 of the upper portion of said recess while the movable member 38 in the main is rectangular in cross section, instead of being substantially circular like the member 11 of Fig. 3.

It is thus apparent that the broad principle of the invention is adapted to be incorporated in various types -of machines, without departing fromthe" scope of the invention or of the ap-v portion, and a cutting head normally positioned in said; recess and having inoperative cutting surfaces lying adjacent to each portion of the inner surface ofsaid recess, a cutting surface lying substantially in the plane of the operating surface 'of said member, and a third'inoperative cutting surface extending from said last-named cutting surface angularly into said recess, free from engagement with the opposed surface of a' companion cutting head movably mounted with respect to and in frictional engagement with said first cutting head.

- 2. A single staying machine for staying the corners of paper boxes, comprising a supporting member having a recess of the same width of and open upon the oppositesides'of said member, said recess being bounded vertically by shouldersja reversible cutting head normally positioned in said recess between said shoulders and exposed "in the" planes ofthe laterally opposite sides of said member, means to secure said ELMER E. HEARING. 

